#box{
	width: 100vw;
	height: 87.5vh;
	background: url(../img/bj3.jpg) no-repeat center;
}
#box>div{
	width: 100%;
	height: 100%;
	background: rgba(0,0,0,.5);
	color: white;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}
#box>div>div{
	font-size: 20px;
	font-weight: bold;
}
#box>div>div>p{
	margin-bottom: 30px;
}